System comprising a nozzle and a fixing means therefor

A nozzle system, comprising:

• a nozzle having at least two nozzle apertures, the nozzle being formed from at least two superimposed plates, at least one of the plates having a second microstructure so that the plates lying one on top of the other define, on one side, a liquid inlet connected to a channel system and/or a filter system which then opens into one or more liquid outlets;
• a nozzle holder;
• and
• a check nut having the nozzle arranged therein and fixing the nozzle in the nozzle holder, wherein:
• the nozzle apertures or the nozzle channels opening into the nozzle apertures are arranged so that the jets leaving the nozzle apertures are aimed towards one another at an angle α,
• in the assembled state the check nut extends at least partially into the area in front of the nozzle apertures, and
• in the assembled state the nozzle holder and the check nut have an inner recess, which begins on the side adjacent to an end face of the nozzle and extends as far as the outside of the nozzle holder parallel to the end face of the nozzle, and which, viewed from the end face of the nozzle, widens out steadily and continuously in the direction of, and as far as, the outside of the check nut parallel to the end face of the nozzle.

A delivery device for liquids, comprising:

• a lower and an upper housing part mounted to be rotatable relative to one another, the upper part of the housing containing a spring housing with spring which is tensioned by rotating the two housing parts by means of a locking clamping mechanism preferably in the form of a screw thread or gear and is released by pressing a release button on the upper part of the housing, the spring meanwhile moving a power take-off flange connected to a hollow piston on the lower end of which a container can be fitted and at the upper end of which are found a valve and a pressure chamber which is connected for fluid transmission to the nozzle or the nozzle system formed in the upwardly open part of the upper housing part, the nozzle having at least two nozzle apertures;
• a nozzle holder;
• and
• a check nut having the nozzle arranged therein and fixing the nozzle in the nozzle holder, wherein:
• the nozzle apertures or the nozzle channels opening into the nozzle apertures are arranged so that the jets leaving the nozzle apertures are aimed towards one another at an angle α,
• in the assembled state the check nut extends at least partially into the area in front of the nozzle apertures, and
• in the assembled state the nozzle holder and the check nut have an inner recess, which begins on the side adjacent to an end face of the nozzle and extends as far as the outside of the nozzle holder parallel to the end face of the nozzle, and which, viewed from the end face of the nozzle, widens out steadily and continuously in the direction of, and as far as, the outside of the check nut parallel to the end face of the nozzle.